In a bowl, combine the tomatoes, cucumber, onion, garlic and basil.,Drizzle with the 1/2 cup olive oil and the 3 tblsps vinegar, season with salt and pepper and toss well.,Place half of the bread in a wide, shallow bowl.,Spoon half of the tomato mixture over the bread.,Layer the remaining bread on top and then the remaining tomato mixture.,______,Just before serving, toss the salad and adjust the seasonings with salt and pepper.,If the bread seems dry, add a little oil or vinegar.,Serve immediately.